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All results from a given calculation for B2H4 (Diborane(4) D2d)

using model chemistry: CID/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2D 1A1
Energy calculated at CID/6-31G
 hartrees
Energy at 0K-51.737014
Energy at 298.15K-51.739583
HF Energy-51.614217
Nuclear repulsion energy22.052062
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at CID/6-31G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 2585 2417 0.00      
2 A1 1246 1165 0.00      
3 A1 871 815 0.00      
4 B1 530 495 0.00      
5 B2 2559 2394 92.75      
6 B2 1198 1121 14.75      
7 E 2636 2465 101.39      
7 E 2636 2465 101.39      
8 E 1025 959 28.34      
8 E 1025 959 28.34      
9 E 475 444 5.12      
9 E 475 444 5.12      

Unscaled Zero Point Vibrational Energy (zpe) 8630.1 cm-1
Scaled (by 0.9352) Zero Point Vibrational Energy (zpe) 8070.9 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at CID/6-31G
ABC
3.98806 0.64401 0.64401

See section I.F.4 to change rotational constant units
Geometric Data calculated at CID/6-31G

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.834
B2 0.000 0.000 -0.834
H3 0.000 1.024 1.474
H4 0.000 -1.024 1.474
H5 1.024 0.000 -1.474
H6 -1.024 0.000 -1.474

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.66761.20751.20752.52452.5245
B21.66762.52452.52451.20751.2075
H31.20752.52452.04803.28393.2839
H41.20752.52452.04803.28393.2839
H52.52451.20753.28393.28392.0480
H62.52451.20753.28393.28392.0480

picture of Diborane(4) D2d state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
B1 B2 H5 121.999 B1 B2 H6 121.999
B2 B1 H3 121.999 B2 B1 H4 121.999
H3 B1 H4 116.001 H5 B2 H6 116.001
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability